Spring security: two security realms in app

Spring security: two security realms in app

https://blog.codecentric.de/en/2012/07/spring-security-two-security-realms-in-one-application/
http://docs.spring.io/spring-security/site/docs/3.0.x/reference/ns-config.html
https://docs.oracle.com/cd/E19879-01/819-3669/bnagf/index.html